Heckelphone-clarinet

The heckelphone-clarinet (or Heckelphon-Klarinette) is a rare woodwind instrument, invented in 1907 by Wilhelm Heckel in Wiesbaden-Biebrich, Germany. Despite its name, it is essentially a wooden saxophone with wide conical bore, built of red-stained maple wood, overblowing the octave, and with clarinet-like fingerings. It has a single-reed mouthpiece attached to a short metal neck, similar to an alto clarinet. The heckelphone-clarinet is a transposing instrument in B♭ with sounding range of D3 (middle line of bass staff) to C6 (two ledger lines above the treble staff), written a whole tone higher. The instrument is not to be confused with the heckel-clarina, also a very rare conical bore single reed woodwind by Heckel but higher in pitch and made of metal, nor with the heckelphone, a double reed instrument lower in pitch.